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发明名称
Hochfrequenzmikrophon
摘要
申请公布号
DE696631(C)
申请公布日期
1940.09.26
申请号
DE193500N7734D
申请日期
1935.02.08
申请人
C. LORENZ AKT.-GES.
发明人
分类号
H04R23/00
主分类号
H04R23/00
代理机构
代理人
主权项
地址
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